JP5616432B2 - Proportional throttle valve - Google Patents

Proportional throttle valve Download PDF

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JP5616432B2
JP5616432B2 JP2012507613A JP2012507613A JP5616432B2 JP 5616432 B2 JP5616432 B2 JP 5616432B2 JP 2012507613 A JP2012507613 A JP 2012507613A JP 2012507613 A JP2012507613 A JP 2012507613A JP 5616432 B2 JP5616432 B2 JP 5616432B2
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proportional throttle
valve
piston
throttle valve
fluid
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JP2012525547A (en
JP2012525547A5 (en
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ビル マルクス
ビル マルクス
ブリュック ペーター
ブリュック ペーター
ファイト マルクス
ファイト マルクス
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ハイダック フルイドテヒニク ゲゼルシャフト ミット ベシュレンクテル ハフツング
ハイダック フルイドテヒニク ゲゼルシャフト ミット ベシュレンクテル ハフツング
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/32—Means for additional adjustment of the rate of flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0668—Sliding valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/01—Control of flow without auxiliary power
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Magnetically Actuated Valves (AREA)
  • Safety Valves (AREA)
  • Sliding Valves (AREA)

Description

本発明は、流体入口及び流体出口を備える弁ハウジングにおいて長手方向に移動可能に案内されるとともにオリフィス作用を奏しうる、弁ピストンを具備する比例絞り弁において、計量縁部を備えた弁ピストンが、流体入口と流体出口との間の流体連通を活性化させる比例絞り弁に関する。 The present invention, in Bei El valve housing fluid inlet and a fluid outlet may exhibit the orifice effect while being movably guided in the longitudinal direction, the proportional throttle valve having a valve piston, a valve piston with a metering edge And a proportional throttle valve that activates fluid communication between the fluid inlet and the fluid outlet.

比例絞り弁は、それら弁を通過する流体流量のレベルが、弁ピストンを活性化させるコイルのその時点の磁流に応じて連続的に変更されるべき場合によく使用される。弁ピストンの弁座の開口断面は、弁ピストンの位置に応じて定まる。コイルに直流の電流が供給される場合、磁流に比例する磁力が形成され、その結果として、弁ピストンが開放位置に移動される。ここで、一般に、弁ピストンの後方に配置されるばねには張力が付与され、そのばね力は、磁力に対して反対に作用する。これら磁力とばね力との間に平衡状態が確立されている場合、弁ピストンはその位置に留まる。   Proportional throttle valves are often used when the level of fluid flow through the valves should be changed continuously in response to the current magnetic current of the coil that activates the valve piston. The opening cross section of the valve seat of the valve piston is determined according to the position of the valve piston. When a direct current is supplied to the coil, a magnetic force proportional to the magnetic current is formed, and as a result, the valve piston is moved to the open position. Here, in general, tension is applied to the spring disposed behind the valve piston, and the spring force acts against the magnetic force. If an equilibrium is established between these magnetic and spring forces, the valve piston remains in that position.

比例絞り弁は、制御されるべき圧力レベルから大部分が無関係である。なぜなら、弁ピストンが圧力均一化されている、すなわち一様に高い圧力が２つの端部面に作用するためである。   Proportional throttles are largely independent of the pressure level to be controlled. This is because the pressure of the valve piston is made uniform, that is, a uniformly high pressure acts on the two end faces.

比例絞り弁は、例えば昇降動作における適用、例えば産業用トラックにおいて用いられる。これらの適用のために荷を降下させるために、２／２方（２／２−ｗａｙ）弁が基本的な昇降運動を表すのに用いられる。同時に、体積流量を制御するのに比例絞り弁が用いられる。   Proportional throttle valves are used, for example, in lifting operations, for example in industrial trucks. In order to lower the load for these applications, a 2 / 2-way valve is used to represent the basic lifting motion. At the same time, a proportional throttle valve is used to control the volume flow rate.

しかしながら、比例絞り弁において、体積流量が流体入口と流体出口との間の差圧に応じて定まり、それにより、例えば産業用トラックその他の上昇手段において、降下速度が移動される荷に応じて定まるようになるという問題がある。上昇手段又は降下過程において搬送されるべき荷に損傷を与えうる境界値を超える場合がある。したがって、従来技術において、調整不能な最大体積流量調整器が比例絞り弁の上流に直列に接続される。最大体積流量調整器は受動的であるように形成され、したがって、最大降下速度を超えたときのみ作動する。したがって、この点に関して設置される従来技術の流体回路は複雑であり、構成要素が複数である理由から、それに対応する大きい寸法の導入空間が要求される。   However, in a proportional throttle valve, the volume flow rate is determined according to the differential pressure between the fluid inlet and the fluid outlet, so that the descent speed is determined according to the load being moved, for example in an industrial truck or other lifting means. There is a problem of becoming. There are cases where a boundary value that may damage the load to be transported in the ascent means or the descending process is exceeded. Therefore, in the prior art, a non-adjustable maximum volume flow regulator is connected in series upstream of the proportional throttle valve. The maximum volume flow regulator is configured to be passive and therefore only operates when the maximum descent rate is exceeded. Therefore, the prior art fluid circuit installed in this respect is complex and because of the multiple components, a correspondingly large introduction space is required.

この従来技術に関し、本発明の目的は、前述した機能を組込んだ比例絞り弁を考案することである。   With respect to this prior art, an object of the present invention is to devise a proportional throttle valve incorporating the above-described functions.

この目的は、特許請求の範囲の請求項１に記載の特徴を備えた比例絞り弁の全体によって達成される。
この比例絞り弁において、請求項１の特徴部分に記載されるように、流体入口と流体出口との間の流体連通状態を調整する弁ピストンの計量縁部が、流量調整器の制御ピストンによって形成され、これら流量制御弁及び比例絞り弁の機能は、１つの弁ユニットにおいて組合わされる。 This object is achieved by the entire proportional throttle valve with the features of claim 1.
In this proportional throttle valve, the metering edge of the valve piston for adjusting the fluid communication between the fluid inlet and the fluid outlet is formed by the control piston of the flow regulator as described in the characterizing part of claim 1. The functions of the flow control valve and the proportional throttle valve are combined in one valve unit.

好適な実施形態は従属請求項から明らかになるであろう。
導入空間を節約する特に好適な一実施形態において、流量制御器の制御ピストンは、弁ピストンそれ自体の孔と同一の弁ハウジングの孔において移動可能に案内される。この点に関して、流量調整器の制御ピストンが、弁ピストンの軸線方向の孔において翼列（ｃａｓｃａｄｅ）の態様で案内されるとともに、要求される関連の制御ばねが制御ピストンの軸線方向の孔と、弁ピストンの軸線方向の孔との両方において案内されることが特に有利に提供される。 Preferred embodiments will become apparent from the dependent claims.
In a particularly preferred embodiment that saves introduction space, the control piston of the flow controller is movably guided in the same hole in the valve housing as the hole in the valve piston itself. In this regard, the control piston of the flow regulator is guided in a cascade manner in the axial bore of the valve piston, and the required associated control spring is the axial bore of the control piston; It is particularly advantageous to be guided both in the axial bore of the valve piston.

好ましくは、流量調整器の特定の計量オリフィスは、流体入口に隣接する制御ピストンの軸線方向の端部に配置され、制御ピストンの底部において封止部を形成するとともに、制御ばねのばね室への流体連通部を形成する。制御ピストンは半径方向の流体出口を有しており、この流体出口は、比例絞り弁の休止状態において、弁ピストンの軸線方向の孔に完全にわたって設けられるとともに、弁ピストンを移動するようにコイルが励起されるときにのみ、これら出口は、流体出口を形成する弁ハウジングの半径方向の孔に部分的又は完全にわたって設けられる。比例絞り弁は、直接制御されるように形成されうるし、又は操作されるように形成されうる。 Preferably, the specific metering orifice of the flow regulator is arranged at the axial end of the control piston adjacent to the fluid inlet, forms a seal at the bottom of the control piston and is connected to the spring chamber of the control spring. A fluid communication part is formed. The control piston has a radial fluid outlet, which is provided completely in the axial bore of the valve piston in the resting state of the proportional throttle valve and has a coil for moving the valve piston. Only when energized, these outlets are partially or fully provided in the radial holes of the valve housing that form the fluid outlet. The proportional throttle can be configured to be directly controlled or configured to be operated.

本発明に係る比例絞り弁の長手方向の断面図である。It is sectional drawing of the longitudinal direction of the proportional throttle valve which concerns on this invention. 図１においてＩＩで表される詳細部を示す図である。It is a figure which shows the detailed part represented by II in FIG.

本発明の解決手段を以下に図面を用いて詳述する。図面は概略的であり寸法通りではない。
図１は、直接的に制御される比例絞り弁１を長手方向の断面図において示す図である。磁石システムハウジングにおいて、ＤＣコイル１５によって作動されうる、詳述されないアーマチュア１６を備えた磁石システム１４が在る。磁石システム１４は、押圧変位制御式比例磁石システムとして形成されるのが好ましく、ＤＣコイル１５の励起状態において、アーマチュア１６及びアーマチュア１６に動的に連結された作動部材１７は、流体入口４の方向において下方に移動可能である。 The solving means of the present invention will be described in detail with reference to the drawings. The drawings are schematic and not to scale.
FIG. 1 shows a directly controlled proportional throttle valve 1 in a longitudinal section. In the magnet system housing, there is a magnet system 14 with an armature 16 (not detailed) that can be actuated by a DC coil 15. The magnet system 14 is preferably formed as a pressure displacement controlled proportional magnet system, and in the excited state of the DC coil 15, the armature 16 and the actuating member 17 dynamically connected to the armature 16 are in the direction of the fluid inlet 4. Can be moved downward.

作動部材１７は、「オリフィスピストン」として形成される弁ピストン２に動的に連結されている。ＤＣコイル１５の非励磁状態において、アーマチュア１６、作動要素１７及び弁ピストン２は、ばね１８によって上昇停止部１９に対して移動される。これは、比例絞り弁１の閉止状態に対応しており、流体入口４と流体出口５との間の流体経路は閉塞される。   The actuating member 17 is dynamically connected to the valve piston 2 which is formed as an “orifice piston”. In the non-excited state of the DC coil 15, the armature 16, the actuating element 17 and the valve piston 2 are moved relative to the ascending stop 19 by the spring 18. This corresponds to the closed state of the proportional throttle valve 1 and the fluid path between the fluid inlet 4 and the fluid outlet 5 is closed.

磁石システムハウジングは、弁ハウジング３内に突出するように円筒形の案内部２０とともに形成されており、適宜封止される。円筒形の作動要素１７は円筒形の案内部２０内に同様に突出するとともに、案内部２０内において、弁ピストン２の延長部２１に取外し可能かつ確実に連結され、この延長部は、マンドレルのようにして永続的な接触状態を伴ってばね１８を案内する。延長部２１は、上昇停止部１９を形成する底部２３を備えた円筒形のスペーサ２２を通る経路の後に、オリフィスピストンとして形成される弁ピストン２に移行する。この上昇停止部１９は、弁ピストン２の後部２４を弁ピストン２の主要制御域２５から隔離する。   The magnet system housing is formed together with the cylindrical guide portion 20 so as to protrude into the valve housing 3, and is appropriately sealed. The cylindrical actuating element 17 likewise projects into the cylindrical guide 20 and is detachably and securely connected to the extension 21 of the valve piston 2 in the guide 20 and this extension is connected to the mandrel. In this way, the spring 18 is guided with a permanent contact state. The extension 21 transitions to the valve piston 2 formed as an orifice piston after a path through a cylindrical spacer 22 with a bottom 23 forming the ascending stop 19. The lift stop 19 isolates the rear part 24 of the valve piston 2 from the main control area 25 of the valve piston 2.

主要制御域２５は、概ね軸線方向の中央部において流量調整器８の制御ピストン７に分割される。制御ピストン７は弁ピストン２の孔と同一の孔９において案内され、主要制御域２５の一部として、作動要素１７を介して弁ハウジングにおいて移動可能なように支持される。制御ピストン７は、前述した弁ピストン２の軸線方向の孔１０において軸線方向に移動可能なようにさらに案内される。圧縮ばねとして形成される制御ばね１１は、その長さのおよそ半分にわたって軸線方向の孔１０において案内される。   The main control area 25 is divided into the control piston 7 of the flow rate regulator 8 in the central part in the axial direction. The control piston 7 is guided in a hole 9 identical to that of the valve piston 2 and is movably supported in the valve housing via an actuating element 17 as part of the main control area 25. The control piston 7 is further guided so as to be movable in the axial direction in the hole 10 in the axial direction of the valve piston 2 described above. The control spring 11 formed as a compression spring is guided in the axial bore 10 over approximately half of its length.

制御ピストン７には、制御ばね１１の案内部として用いられる追加の軸線方向の孔１２が形成されている。流体入口４に向いた軸線方向の端部において、計量オリフィス１３が制御ピストン７に挿入され、特にねじ込まれる。制御ピストン７には、直径方向反対側に半径方向の開口２６が形成され、これら開口２６は、図２に示される比例絞り弁１の休止状態において、封止位置において孔９の壁部に完全にわたって設けられている。図１に係る詳細部ＩＩにおいて図２が示すように、流体出口５は、孔９の壁部において直径方向に差込まれた少なくとも２つの開口２７によって形成される。計量縁部６は、制御ピストン７の外径部に配置され、ＤＣコイル１５が適宜励磁されるときに、流体入口４と流体出口５との間の全体の体積流量を調整するのに用いられる。 The control piston 7 is formed with an additional axial hole 12 used as a guide for the control spring 11. At the axial end facing the fluid inlet 4, the metering orifice 13 is inserted into the control piston 7, in particular screwed. The control piston 7 is formed with radial openings 26 on the diametrically opposite side, which openings 26 are completely in the wall of the hole 9 in the sealing position in the resting state of the proportional throttle valve 1 shown in FIG. It is provided over. As shown in FIG. 2 in detail II according to FIG. 1, the fluid outlet 5 is formed by at least two openings 27 which are diametrically inserted in the wall of the hole 9. The metering edge 6 is arranged at the outer diameter of the control piston 7 and is used to adjust the overall volume flow between the fluid inlet 4 and the fluid outlet 5 when the DC coil 15 is energized as appropriate. .

比例絞り弁１の動作に際し、制御ばね１１は、その予張力作用によって、計量オリフィス１３と弁ピストン２の上方部分との間の距離を最大に維持する。この状態は、可能な最大体積流量に達するまで続き、弁は単に比例絞り弁として作用する。計量オリフィス１３は、体積流量の値に応じて、計量オリフィス１３を通る流れが生じるときに圧力損失を発生させる。この圧力値は、次いで制御ばね１１を短尺化させることによって主要制御域２５が同様に短尺化されるまで、制御ばね１１への方向における位置決め作用力を発生させる。計量縁部６は、流体出口５における流れ断面がより小さくなる方向において押圧され、この際に、計量オリフィス１３における圧力損失は、次いで体積流量の平衡状態が確立されるまで幾分低下する。そして、弁ピストン２が補償作用及び比例絞り作用を担う。   During the operation of the proportional throttle valve 1, the control spring 11 maintains the maximum distance between the metering orifice 13 and the upper part of the valve piston 2 by its pretensioning action. This condition continues until the maximum possible volume flow is reached and the valve simply acts as a proportional throttle valve. The metering orifice 13 generates a pressure loss when a flow through the metering orifice 13 occurs depending on the value of the volume flow rate. This pressure value then generates a positioning force in the direction toward the control spring 11 until the main control area 25 is similarly shortened by shortening the control spring 11. The metering edge 6 is pressed in a direction where the flow cross section at the fluid outlet 5 becomes smaller, in which case the pressure loss at the metering orifice 13 is then somewhat reduced until a volume flow equilibrium is established. The valve piston 2 has a compensating action and a proportional throttle action.

したがって、本発明に係る解決手段によれば、外部流量調整器の流量調整作用が比例絞り弁に直接適応されうるようになり、それにより、この態様では、完成された追加の弁を流体回路から省略できる。ここで述べるように、このことは、比例絞り弁の制御ピストン内に収容される一定流量調整器のために必要な計量オリフィス及び制御ばねによって達成される。ここで、流量調整器のために同様に必要である補償作用は、比例絞り弁それ自体の制御ピストンによって担われる。したがって、ここで述べるピストンの計量縁部は、比例絞り作用とともに流量調整器の補償作用をも担っている。   Therefore, according to the solution according to the present invention, the flow regulating action of the external flow regulator can be directly applied to the proportional throttle valve, so that in this aspect, the completed additional valve is removed from the fluid circuit. Can be omitted. As described herein, this is accomplished by the metering orifice and control spring required for a constant flow regulator housed in the control piston of the proportional throttle valve. Here, the compensating action that is also necessary for the flow regulator is borne by the control piston of the proportional throttle valve itself. Therefore, the metering edge of the piston described here has a proportional throttle action as well as a compensation action for the flow regulator.

Claims (7)

流体入口（４）及び流体出口（５）を備える弁ハウジング（３）において長手方向に移動可能に案内されるとともにオリフィス作用を奏しうる、弁ピストン（２）を具備する比例絞り弁であって、
前記弁ピストン（２）の計量縁部（６）が、前記流体入口（４）から前記流体出口（５）までの流体連通部のための流体調整器（８）の制御ピストン（７）によって形成されており、
前記制御ピストン（７）が、当該比例絞り弁を通過する流体の体積流量に応じて、前記弁ピストン（２）に対して移動可能であることを特徴とする、比例絞り弁。 In the fluid inlet (4) and a fluid outlet (5) of Bei El valve housing (3) can exhibit the orifice effect while being movably guided in the longitudinal direction, a proportional throttle valve having a valve piston (2) ,
The metering edge (6) of the valve piston (2) is formed by a control piston (7) of a fluid regulator (8) for fluid communication from the fluid inlet (4) to the fluid outlet (5). Has been
Proportional throttle valve, characterized in that the control piston (7) is movable relative to the valve piston (2) in accordance with the volumetric flow rate of the fluid passing through the proportional throttle valve. 前記流量調整器（８）の前記制御ピストン（７）は、弁ピストン（２）の孔と同一の前記弁ハウジング（３）の孔（９）において移動可能に案内されることを特徴とする、請求項１に記載の比例絞り弁。 The control piston (7) of the flow regulator (8) is movably guided in a hole (9) of the valve housing (3) that is the same as the hole of the valve piston (2). The proportional throttle valve according to claim 1. 前記流量調整器（８）の前記制御ピストン（７）が前記弁ピストン（２）の軸線方向の孔（１０）において案内され、制御ばね（１１）が、前記軸線方向の孔（１０）において、かつ前記制御ピストン（７）における追加の軸線方向の孔（１２）において、半径方向に支持されることを特徴とする、請求項１又は２に記載の比例絞り弁。   The control piston (7) of the flow regulator (8) is guided in the axial hole (10) of the valve piston (2), and the control spring (11) is in the axial hole (10). 3. Proportional throttle valve according to claim 1 or 2, characterized in that it is supported radially in an additional axial hole (12) in the control piston (7). 前記流量調整器（８）の計量オリフィス（１３）が前記制御ピストン（７）内に在ることを特徴とする、請求項１から３のいずれか１項に記載の比例絞り弁。   4. The proportional throttle valve according to claim 1, characterized in that the metering orifice (13) of the flow regulator (8) is in the control piston (7). 前記計量オリフィス（１３）が、前記流体入口（４）に向いた前記制御ピストン（７）の端部領域に配置されることを特徴とする、請求項４に記載の比例絞り弁。   5. Proportional throttle valve according to claim 4, characterized in that the metering orifice (13) is arranged in the end region of the control piston (7) facing the fluid inlet (4). 軸線方向における前記流体入口（４）が前記弁ハウジング（３）内に延出しており、前記流体入口（４）に対して直交する半径方向に配置される前記流体出口（５）が、前記弁ハウジング（３）を通って延在することを特徴とする、請求項１から５のいずれか１項に記載の比例絞り弁。 Wherein the axial fluid inlet (4) is extended in the valve housing (3) within said fluid outlet disposed radially perpendicular against the fluid inlet (4) (5), said valve 6. Proportional throttle valve according to one of claims 1 to 5, characterized in that it extends through the housing (3). 当該比例絞り弁が直接的に制御されることを特徴とする、請求項１から６のいずれか１項に記載の比例絞り弁。   The proportional throttle valve according to any one of claims 1 to 6, wherein the proportional throttle valve is directly controlled.
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